If a specific affliction is bestowed, the save DC of the spell replaces the usual save DC of the affliction. You can also invent your own curse, but it should be no more powerful than those described above.

Alternate Bestow Curse Effects

Bestow curse allows the caster to invent a novel effect, but one no more powerful than those described in the spell itself (no worse than a 50% chance of losing actions, a –4 penalty on checks, or a –6 penalty to an ability score). Effects in line with that power level include the following.

When the victim is adjacent to the area of a damaging spell or spell-like effect, the area expands to include the victim.

The victim is plagued by cacophonous sounds and strobing lights that only she can hear and see. She is distracted (+5 to Perception DCs), cannot take 10 on skill checks, and must succeed at a concentration check (DC 10 + spell level) to successfully cast spells.

Anytime the victim picks up or retrieves an object (including drawing a weapon or ammunition), there is a 50% chance that he immediately drops it. If ammunition is dropped, the attack being made is lost. Any remaining attacks in a full attack action may still be attempted.